/Engine/Source/Developer/ScreenShotComparisonTools/Public/ImageComparer.h
[FImageComparisonResult](API\Developer\ScreenShotComparisonTools\FImageComparisonResult) Compare ( const [FString](API\Runtime\Core\Containers\FString) & ImagePathA, const [FString](API\Runtime\Core\Containers\FString) & ImagePathB, [FImageTolerance](API\Developer\ScreenShotComparisonTools\FImageTolerance) Tolerance, const [FString](API\Runtime\Core\Containers\FString) & OutDeltaPath )